Week of January 30, 2012
| Date |
Open |
High |
Low |
Close |
Volume |
| Jan 30, 2012 |
12.49 |
12.78 |
12.36 |
12.68 |
399,465 |
| Jan 31, 2012 |
12.78 |
13.31 |
12.72 |
12.97 |
736,043 |
| Feb 1, 2012 |
13.02 |
13.50 |
12.94 |
13.41 |
425,360 |
| Feb 2, 2012 |
13.43 |
13.50 |
13.18 |
13.25 |
395,814 |
| Feb 3, 2012 |
13.40 |
13.40 |
13.11 |
13.21 |
337,828 |
Year End Stock Prices
The historical stock information provided is for informational purposes only, and is not intended for trading purposes. The historical stock information is provided by Mergent, a third party service, and Optimer Pharmaceuticals, Inc. does not maintain or provide information directly to this service. Prices display split-adjusted cost basis per share on that date.
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